One persistent strand in utopian thinking, as we have often mentioned, is the feeling that there is some set of principles obvious enough to be accepted by all men of good will, precise enough to give unambiguous guidance in particular situations, clear enough so that all will realize its dictates. and complete enough to cover all problems which actually arise. Since I do not assume that there are such principles, I do not presume that the political realm will whither away. The messiness of the details of a political apparatus and the details of how it is to be controlled and limited do not fit easily into one's hopes for a sleek, simple utopian scheme.
Ch. 10 : A Framework for Utopia; Utopian Means and Ends, p. 330 - Anarchy, State, and Utopia (1974)